Question

sex determination in human beings occurs right at the time when the fertilization occurs there in true or false​

Answer 1

Answer:

yes

Explanation:

Male sperm is of two types :

one containing x chromosome

another containing y chromosome

at the time of fertilization if first sperm that enters ova contains x chromosome than it will be a girl or will be a boy if sperm contains y chromosome.

it's luck no body can control it